Multifunctional oxidization-type biocide

The invention provides a multifunctional oxidization-type biocide, and relates to the technical field of water treatment. The biocide comprises the materials of, by weight, 15-20% of composite quaternary ammonium salt, 3-6% of chlorine dioxide, 1-3% of a borate solution, 10-20% of high-molecular-weight polymaleic anhydride, 6-8% of a penetrant T, 5-10% of zinc salt, 3-5% of composite organic amine, 5-8% of molybdate, 2-3% of natural organic polymer, and balance of water. The compounding raw materials adopted by the invention are nontoxic, cheap, and highly efficient. The composite quaternary ammonium salt and chlorine dioxide are biocidal main active components. The high-molecular-weight polymaleic anhydride is a scale inhibitor active component. The molybdate and composite organic amine mainly perform corrosion inhibition effects. With the compounding of the agents with the three different functions, a synergistic effect is provided.